Holder for marking or erasive material.



PATENTED NOV. 24, 1903.

R. P. HAFNBR. HOLDER FOR MARKING OR ERASIVE MATERIAL.

APPLICATION FILED MAY 5, 1903.

no MODEL.

A TTOHNE Y 5,

u: NDRRYS PETERS co, PNOTQLLITHQ. WASHINGTON. 0,41.

PatentedNovember 24, 1903.

PATENT FFICE.

RICHARD P. HAFNER, OF PASSAIC, NEW JERSEY.

HOLDER FOR MARKING OR ERASIVE MATERIAL.

SPECIFICATION forming part of Letters Patent No. 745,053, dated November24, 1903. Application filed liday d, 1903. Serial No. 155,728. (Nomodel.)

\ proved Holder for Marking or Erasive Mate- V rial, of which thefollowing is a full, clear,

and exact description.

The purpose of my invention is to provide a simple form of holder inwhich an interiorly-located and exteriorly-operated receiver is arrangedto travel in direction of one or the other of the open ends of a tubular.casing or body, which receiver is adapted to hold a stick of chalk orcrayon, for example, at each end or an erasive material or a markingmaterial at one end and an erasive material at the opposite end, wherebythe material attached to either end of the receiver may be exposed foruse, or all of the material employed may be protectively concealedwithin the body or casing.

A further purpose of the invention is to provide a simple and effectivemeans for attachingmaterial to the receiver, together with meansapplicable to the ends of the body or casing to prevent said ends of thecasing from possibly scratching or marring the article or object to bemarked upon or cleaned.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective view of the device, illustrating the manner inwhich the material is applied to the receiver. Fig. 2 is a perspectiveview of the article in use, and Fig. 3 is a longitudinal section throughthe article.

A represents the tubular body or casing, which may be made of anysuitable material--for example, metal,celluloid, rubber, or wood-and thesaid body A is open at both ends and is provided with a spiral slot 10,extending from a point near one end to a point near the opposite end, asillustrated.

Preferably the ends of the body or casing A are expanded, so as to formhub-terminals 11, and in these hub-terminals thimbles 12 are located,which thimbles are of rubber, chamois, or other soft or elasticmaterial. The said thimbles are provided with flanges at their outerends, which flanges cover the inner portions of the body or casing towhich the thimbles are applied, and by reason of the hub formation 11 atthe ends of the body or casing A when the protective thimbles 12 are inplace in the body or casing their inher surfaces are flush with theinner surface of the body or casing, so that the said thimbles .ofier noobstruction to the free outward passage of any object capable of movingin the body or casingA, as is shown in Fig. 3.

The protective thimbles 12 are adapted to prevent the ends of the bodyor casing, which ends may be more or less sharp, from coming in contactwith the blackboard or other object or article from which the erasure isto be made or upon which marking is to be produced.

A receiver 13 is located within the body or casing A, being adapted tounobstructedly slide therein, and this receiver 13 while it is shownsolid may be tubular, if desired. The said receiver may be made of anysuitable material. When the receiver 13 is solid, as illustrated, whichis its preferred construction, the ends of the receiver are exteriorlyreduced in order to form recesses in which the shank ends of clamps 14are introduced and secured to the receiver 'by screws or equivalentfastening devices, thus preventing the attached clamps from interferingwith the proper action of the receiver.

At the outer end of the shank of each clamp 14 a hook-like section 15 isformed, having its inner surface convexed and its outer surface concave.Usually but two of these clamps 14 are necessary at each end of thereceiver 13, and the said clamps 14 are preferably made of a springmaterial. The hook-shaped outer ends of the clamps 14. have their edgesmore or less sharp for a purpose to be here inafter described.

A band or ring 16 is mounted to slide freely upon the exterior of thebody or casing A, and a screw or pin 17 extends through this band orring 16 into the spiral slot 10 of the said body or casing, as isparticularly shown in Fig. 3.

In connection with the receiver 13 two sticks B, of chalk or crayon orother marking material, may be employed, and these sticks B arepreferably of the same diameter throughout their length instead of beingtapering, as is customary; but the tapering formation of stick may bereadily adapted to the holder, if desired.

As is illustrated in Fig. 1, a stick B of marking material is forcedbetween the hook-like 1 outer extremities 15 of the clampsl, and thestick when properly seated against the opposing end of the receiver 13is then turned around, whereupon the sharp edges of the hook-terminals15 of the clamps 14 form a spiral groove 18 in the stick of marking material, as is illustrated in Fig. 3. In this manner the hook-like outerextremities of th'e clamps 13 seat themselves in the marking ma-vterial, holding the said material firmly to the receiver and embeddingthemselves to such? an extent as to ofier no resistance to the pas-isage of 'the marking material into or outofi the body or casing A. Itwill be understood, I

however, that anerasive material of any suitable description may beattached to the re-;

,ceiver 13 instead of the marking material Bl shown and above referredto or that a stick? of marking material may be secured to one end of areceiver 13 and a stick or piece of erasive material may be attached tothe opposite end of the receiver. I

In the operation of the device by turning; the'ring or band 16 the screwor pin 17, trav-, eling in'the spiral slot 10 in the body or casing A,will cause the receiver 13 to approach one or-the other end of the bodyor casing A, and consequently bring the material carried by'said endbeyond the end of the body or casing in direction of which the receiveris;

made to travel, provided the receiver is car-E ried sufiiciently towardsuch end .of the body; or'casing. When the receiver 13 is broughtl to anapproximatelycentral position in the bodyor casing A, the material ateach end of} the said receiver 13 will be contained within; the body orcasing Aand will be protected,f

and preferably the length of the material ap-&

plied to the receiver 13 is such as to permit} the parts to have theposition just referred to. 5

The device is exceedingly simple, it is ecoi nomic and effective inservice, material may be readily applied to the receiver or detached,

therefrom, andthe material may be quickly 2 and conveniently brought inposition for use 3 at any time or be carried to a protected positionwithin the body or casing A. j Having thus described my invention, Ij

claim as new Patent- 1. A holder for marking or for erasive material,comprising a tubular body or casing having a spiral slot made therein, areceiver mounted to slide in the body or casing, a guide device passedthrough the spiral slot of the body or casing into the receiver, andclamps at the ends of the receiver, adapted to hold material inengagement with the receiver, as described.

2. Aholder for marking or for erasive material, comprising a tubularbody or casing open at its ends and provided with a spiral slotextending practically from one end to the other, a protective thimble ofa soft material located at each end of the body or tube, covering theouter edges of the body or casing, the inner surfaces of which thimblesare in alinement with the inner surface of the body or'casing, areceiver mountedtoslide freely in the body or casing, a band looselymounted exteriorly of the body or casing, a pin extending through thesaid band and the spiral slot of the body or casing into the receiver,and spring-clamps at the ends of the said receiver, as described.

3. A holder for marking or for erasivematerial, comprising a tubularbody or casing open at its ends and provided with a spiral slotextending practically from one end to the other, a protective thimble ofa soft material located ateach end of the body or tube, covand desire tosecure by Letters ering the outer edges of the body or casing,

the inner surfaces of which thimbles are in alinement with the innersurface of the body or casing, a receiver mounted to slide freely in thebody or casing, a band loosely mounted exteriorl-y on the body orcasing, a-pin extending through the said band and the spiral slot of thebody or easing into the receiver, the said receiver having its endsreduced in diameter, and opposing spring-clamps having their shankssecured to the reduced end portions of the receiver, which spring-clampsex- "tend beyond the ends of the receiver and terminate at their outerport-ions in oppositelycurved hook-like members, the opposing faces ofwhich members are convexed and their outer faces concaved, the edges ofthe said hook-like members of the clamps being more or less sharpened,for-the purpose described.

In testimony whereof I have signed my name to thisspecification in thepresence of two subscribing witnesses.

RICHARD P. HAFNER.

Witnesses: I

J. FRED. ACKER, JNo. M. BITTER.

ICC

